{"id":"ddcd88cb-7f62-4ce5-86f9-1704190feb0a","title":"Potential In-Memory Execution Using Reflection.Assembly","description":"Detects usage of \"Reflection.Assembly\" load functions to dynamically load assemblies in memory","author":"frack113","status":"test","level":"medium","date":"2022-12-25","modified":"","tags":["attack.stealth","attack.t1620"],"technique_ids":["T1620"],"logsource":{"product":"windows","category":"ps_script","definition":"Script Block Logging must be enable"},"falsepositives":["Legitimate use of the library"],"references":["https://speakerdeck.com/heirhabarov/hunting-for-powershell-abuse?slide=50"],"source_path":"rules/windows/powershell/powershell_script/posh_ps_dotnet_assembly_from_file.yml","source_sha256":"0830b766775cf48e0f823ccaf568533be80884c698ac40e179e5d4e76963cd2b","source_url":"https://github.com/anpa1200/sigma/blob/b249e9683190cffdcaf188ccbfb90bf4759844e1/rules/windows/powershell/powershell_script/posh_ps_dotnet_assembly_from_file.yml","license":"Detection Rule License 1.1","license_url":"https://github.com/SigmaHQ/Detection-Rule-License/blob/main/LICENSE.Detection.Rules.md","yaml":"title: Potential In-Memory Execution Using Reflection.Assembly\nid: ddcd88cb-7f62-4ce5-86f9-1704190feb0a\nstatus: test\ndescription: Detects usage of \"Reflection.Assembly\" load functions to dynamically load assemblies in memory\nreferences:\n    - https://speakerdeck.com/heirhabarov/hunting-for-powershell-abuse?slide=50\nauthor: frack113\ndate: 2022-12-25\ntags:\n    - attack.stealth\n    - attack.t1620\nlogsource:\n    product: windows\n    category: ps_script\n    definition: Script Block Logging must be enable\ndetection:\n    selection:\n        ScriptBlockText|contains: '[Reflection.Assembly]::load'\n    condition: selection\nfalsepositives:\n    - Legitimate use of the library\nlevel: medium\n","validation":"yaml_parsed_not_backend_compiled_or_live_validated","techniques":[{"key":"enterprise/T1620","id":"T1620","name":"Reflective Code Loading","page":"techniques/enterprise/T1620/"}],"data_path":"data/detection-rules/ddcd88cb-7f62-4ce5-86f9-1704190feb0a.json","kind":"sigma"}